I would not suggest testing without having an exam. Your anal bleeding unless you receive anal sex is not STD related.
The chance of catching an STD orally is very very low, but it can happen
I am thinking that its a coincidence.
Is your wife itchy? Are you sure she isnt seeing someone and has passed something on to you?
You could have hemorrhoids or an STD. It really could be anything. You really need to get tested.
No, you giving oral sex would only affect your mouth, not other parts of your body. Your symptoms and wifes symptoms have nothing to do with the oral sex.